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//===-- QueryLoggingSolver.h
//---------------------------------------------------===//
//
// The KLEE Symbolic Virtual Machine
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#ifndef KLEE_QUERYLOGGINGSOLVER_H
#define KLEE_QUERYLOGGINGSOLVER_H
#include "klee/Solver.h"
#include "klee/SolverImpl.h"
#include "llvm/Support/raw_ostream.h"
using namespace klee;
/// This abstract class represents a solver that is capable of logging
/// queries to a file.
/// Derived classes might specialize this one by providing different formats
/// for the query output.
class QueryLoggingSolver : public SolverImpl {
protected:
Solver *solver;
std::string ErrorInfo;
llvm::raw_fd_ostream os;
// @brief Buffer used by logBuffer
std::string BufferString;
// @brief buffer to store logs before flushing to file
llvm::raw_string_ostream logBuffer;
unsigned queryCount;
int minQueryTimeToLog; // we log to file only those queries
// which take longer than the specified time (ms);
// if this param is negative, log only those queries
// on which the solver has timed out
double startTime;
double lastQueryTime;
const std::string queryCommentSign; // sign representing commented lines
// in given a query format
virtual void startQuery(const Query &query, const char *typeName,
const Query *falseQuery = 0,
const std::vector<const Array *> *objects = 0);
virtual void finishQuery(bool success);
/// flushBuffer - flushes the temporary logs buffer. Depending on threshold
/// settings, contents of the buffer are either discarded or written to a
/// file.
void flushBuffer(void);
virtual void printQuery(const Query &query, const Query *falseQuery = 0,
const std::vector<const Array *> *objects = 0) = 0;
public:
QueryLoggingSolver(Solver *_solver, std::string path,
const std::string &commentSign, int queryTimeToLog);
virtual ~QueryLoggingSolver();
/// implementation of the SolverImpl interface
bool computeTruth(const Query &query, bool &isValid);
bool computeValidity(const Query &query, Solver::Validity &result);
bool computeValue(const Query &query, ref<Expr> &result);
bool computeInitialValues(const Query &query,
const std::vector<const Array *> &objects,
std::vector<std::vector<unsigned char> > &values,
bool &hasSolution);
SolverRunStatus getOperationStatusCode();
char *getConstraintLog(const Query &);
void setCoreSolverTimeout(double timeout);
};
#endif /* KLEE_QUERYLOGGINGSOLVER_H */
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